Market Data

The Bolt-and-Screw Index Is sliding: What the Fastener PPI Signals for Factory Input Costs

At 330.87 and sliding, the producer price index for fasteners is repricing one of the most ubiquitous inputs on the factory floor.

The producer price index for bolts, nuts, screws, rivets and washers reads 330.87 as of May 2026 and is falling, down about 3.5% from a year ago, per the Bureau of Labor Statistics. Against the archived high of 349.35 set in Jan 2026, the current level and direction are the live signal for what machinery and equipment makers should expect from one of their most pervasive input costs, a category that has been repricing ever since the 2021-2023 cost run-up reset its level.

Why the fastener index turns when it does

Fastener prices are steel wire rod with a lag. Producers buy rod months ahead of shipment, so a move in mill prices takes two or three months to surface at the fastener factory gate, and pricing power determines how much of it sticks. That structure makes turns in this index interpretable: when it diverges from its own input costs, the gap measures what the market will bear. Import competition acts as the ceiling, a large share of U.S. fastener consumption arrives from abroad, so domestic producers reprice against landed import costs, tariffs included, not just their own inputs. The practical upshot for a buyer reading the current falling trend: check the steel mill products series first. If rod is moving the same direction, the fastener trend has fuel; if rod has diverged, expect this index to follow it within a quarter or two.

What it means for hardware budgets

Fasteners are the definitive tail-spend category, a few percent of bill-of-material cost spread across more line items than any other commodity, and that shape dictates the response. Nobody renegotiates ten thousand part numbers; budgets move on category-level assumptions, and this index is the correct one to use. With the series down about 3.5% from a year ago and sitting 2% of the way up its archived range of 330.57 (Apr 2026) to 349.35 (Jan 2026), the planning default is to carry the current drift rate into next year's standards, then let distributor negotiations true it up. The discipline that pays is symmetry: the same escalation math that justified increases on the way up should be quoted back to suppliers when the index runs the other way. Categories priced on autopilot only ratchet upward.

Fastener PPI, May 2026, trend falling: 330.87. Archived low 330.57 (Apr 2026); archived high 349.35 (Jan 2026). Year over year the index is down about 3.5% from a year ago.

Nobody renegotiates ten thousand part numbers. Hardware budgets move on category-level assumptions, and this is the index to use.

The category drift, in dollars

Size the stakes for a real budget. A plant spending $200,000 a year on fasteners, with the index down about 3.5% from a year ago, is looking at roughly $6,905 of annual category drift at the current pace (-3.5%) if purchased prices track the series. That number is the negotiating agenda for the next distributor review: it is either the increase you should expect to absorb or the give-back you should expect to collect, depending on which way the index is running. Either way, walking in with the published figure converts a vague annual increase letter into an auditable, two-way calculation.

Use the cost per thousand fasteners calculator to turn the index-level trend into the unit costs your BOMs and standards actually carry. Price the category

Published 2026-07-13.